Latitude/Longitude Disclaimer: The gauge location shown in the above map
is the approximate location based on the latitude/longitude coordinates
provided to the NWS by the gauge owner.

Flood Impacts & Photos

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42.2

This is the approximate minimum level of protection provided by the Monarch levee protecting Chesterfield Valley. Since this gage is affected by Mississippi River backwater, the actual level of overtopping may be higher.

38

Floor of the gage house.

37

Residences north of St. Charles become cut off near this height.

36

Major flooding begins. The levee at the Highway 370 bridge is overtopped.

35

The levee at the Highway 370 bridge overtops near this height. Missouri State Route F northwest of Defiance along Femme Osage Creek will be closed near this height.

34.5

Missouri Highway 94 near Route H will be closed in both directions near this height.

33.5

Highway 94 floods downstream of St Charles.

33

Up to 7 non-Federal levees are overtopped. (USACE)

32.5

The west end of Greens Bottom Road floods. This road connects Pittman Hill Road and Jungs Station Road south of 94.

30.7

Near this height, the base of the Lewis and Clark Boat House will begin flooding.

27

The Katy Trail begins flooding near this height along Hawning Road, about 2 miles north northeast of the Highway 370 bridge.

26.5

Aubuchon Road begins flooding between Teson Road and Riverwood Estates near this height.

25

The right bank downstream overflows, flooding agricultural bottomland. Near this stage, Missouri Route H at Island Road will be closed in both directions.

21

An access road to farmland on Bonhomme Island gets cut off above this height.

The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.